초록 ▼

A process for the non-destructive determination of the quality of a weld seam, the process steps comprising: providing a first and a second component; connecting the first and second components by a weld seam produced by a welding operation; and measuring a surface temperature of the weld seam and s

A process for the non-destructive determination of the quality of a weld seam, the process steps comprising: providing a first and a second component; connecting the first and second components by a weld seam produced by a welding operation; and measuring a surface temperature of the weld seam and surface temperatures of areas of the first and second components adjacent to the weld seam that were heated by the welding operation. A system for carrying out the process for the non-destructive determination of the quality of a weld seam, the system comprising: a measuring device, an analyzing unit, and a welding device.

대표청구항 ▼

1. A process for the non-destructive determination of the quality of a weld seam, the process steps comprising: providing a first and a second component;connecting the first and second components by a weld seam produced by a welding operation;measuring a surface temperature of the weld seam and surf

1. A process for the non-destructive determination of the quality of a weld seam, the process steps comprising: providing a first and a second component;connecting the first and second components by a weld seam produced by a welding operation;measuring a surface temperature of the weld seam and surface temperatures of areas of the first and second components adjacent to the weld seam that were heated by the welding operation;establishing a location-dependent heat profile from the measured surface temperatures;comparing the location-dependent heat profile with a desired profile;wherein the temperature measuring takes place perpendicular to a longitudinal dimension of the weld seam;wherein the temperature measuring takes place in a non-contact manner by detection of the emitted heat radiation;wherein the temperature measuring takes place by a measuring device which detects the heat radiation, in a line-by-line manner, emitted by the weld seam and the areas of the first component and the second component adjacent to the weld seam; andwherein the measuring device detecting the heat radiation moves at the same speed along the weld seam as a tool producing the weld seam. 2. The process according to claim 1, wherein the line-by-line manner of detection of the heat radiation takes place perpendicular to a longitudinal dimension of the weld seam. 3. A system for carrying out a process for the non-destructive determination of the quality of a weld seam, the system comprising: a measuring device to measure the surface temperatures;an analyzing unit to establish the location-dependent heat profile and to compare the location-dependent heat profile with the desired profile;wherein the measuring device includes a detector to detect heat radiation;wherein the measuring device is movable along the weld seam;further comprising a welding device to produce the weld seam between the first and second components; andwherein the welding device is a movable tool and the measuring device is movable at a constant distance behind the movable tool producing the weld seam. 4. The system according to claim 3, wherein the detector is constructed as a line sensor or as a matrix sensor. 5. The system according to claim 3, wherein the detector includes a spectral sensitivity in a close infrared region. 6. The system according to claim 3, wherein the detector is constructed as a CCD sensor. 7. The system according to claim 6, wherein the measuring device includes an objective lens to image emitted radiation onto the CCD sensor.